<!doctype>
<html>
	<head>

	</head>
	<body>

	<div id="xx"></div>

		
		
		<script>
let f = (a,b) => {alert(this);let obj={a:a,b:b};return obj};
var obj = f(3,4);
console.log(f(3,4));
		</script>			
	</body>
</html>